Results 11 to 20 of about 18,596 (191)
, 2013 Scintillation fading can corrupt a satellite-to-ground optical wireless links with burst errors. Rateless codes, suitable for erasure channel, are able to eliminate or to reduce these communication errors. We analyzed the performances of three different rateless codes in a simulated Geo satellite-to-ground downlink.
ANDO', Andrea +5 more
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New Journal of Physics, 2023 The goal of the space-based quantum network is to form the backbone of the quantum internet for long-distance secure data transfer, networked distributed quantum information processing, and other applications.
Xingyu Wang +6 more
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Enhanced Uplink Quantum Communication With Satellites via Downlink Channels
IEEE Transactions on Quantum Engineering, 2021 In developing the global quantum Internet, quantum communication with low-earth-orbit satellites will play a pivotal role. Such communication will need to be two way: effective not only in the satellite-to-ground (downlink) channel but also in the ground-
Eduardo Villasenor +4 more
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Engineering Reports, 2021 This paper discusses the dynamic communication link aspects of IIT Madras student Satellite (IITMSAT). It is a Low‐Earth Orbits satellite which has limited Attitude Determination and Control System (ADCS) ability to align one of its body axes with the ...
Rajavardhan Talashila +1 more
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Remote Sensing, 2023 This paper investigates a low-Earth orbit (LEO) satellite downlink for high-speed data communication in interference situations. A choke ring horn type antenna is used as the data transmitting antenna with an isoflux pattern in the LEO satellite, which ...
Eunjung Kang +6 more
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Electronics, 2022 Free Space Optics (FSO) technology enabling next-generation near-Earth communication is prone to severe propagation losses due to atmospheric-turbulence-induced fading and Mie scattering (clouds). As an alternative to the real-time evaluation of the weather effects over optical signal, a state-of-the-art laboratory testbed for verification of slant APD-
Hristo Ivanov +3 more
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Q-Band LEO Earth Observation Data Downlink: Radiowave Propagation and System Performance
IEEE Access, 2021 Earth Exploration Satellite Service (EESS) systems gather data about the Earth and its natural phenomena. Frequency bands traditionally employed by high-rate telemetry to download data from the satellite to the ground station, such as the X band (8 GHz),
Felix Cuervo +3 more
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Satellite-to-ground optical downlink model using mode mismatching multi-mode photonic lanterns
Optics Express, 2023 Photonics lanterns (PLs) provide an effective mode diversity solution to mitigate atmospheric turbulence interference in free-space optical communications (FSOC). This paper presents mode-mismatching multimode photonic lanterns (MM-PLs) for diversity receiver in satellite-to-ground downlink scenarios. Our study evaluates the coupling characteristics of
Wenjie, Guo +7 more
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Remote Sensing, 2021 Presently, the Earth Observation community is demanding applications that provide low latency and high downlink capabilities. An increase in downlink contacts becomes essential to meet these new requirements.
Joan A. Ruiz-de-Azua +4 more
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Performance Analysis of Large-Scale NGSO Satellite-Based Radio Astronomy Systems
IEEE Access, 2021 Large-scale non-geostationary orbit (NGSO) satellite communication systems (SCSs) are emerging to play an important role for future global wireless communication.
Zhixuan Fan, Yucheng Dai, Hlaing Minn
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